Smoke-jack.



J. B. COX.

SMOKE 11101;. APPLICATION FILED MAY 17, 1913 Patented Aug. 19, 1913.

COLUMBIA PLANOGRAPH CO., WASHINGTON. n. c.

JATJIES B. COX, OF CHICAGO, ILLINOIS.

SMOKE-JACK.

intense.

Application fi1ed May 17, 1913.

Specification of Letters Patent.

Patented Aug. 19,1913.

Serial No. 768,369.

T 0 (ZZZ whom it may concern:

Be it known that 1, {Mains B. Cox, a c1t zen of the United States, residing at Gillcago, in the county of Cook and State of.

Illinois, have invented a new and useful Smoke-Jack, of which the following is a specification.

This invention relates to a smoke ack for railroad engine houses.

An object of the present invention is to provide an improved form of smoke jack whereby an increased draft will be obtained during the firing of an engine and furthermore is adapted to conduct away gases and smoke from the upper roof portion of the engine house.

A further object is to provide means whereby the water of condensation forming upon the side walls of the jack will be led into suitable drip troughs and carried away, preventing any liquid from dropping upon the engine.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter de scribed and claimed, it being understood hat changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings accompanying this specification and forming a part thereof, the preferable form of my invention is illustrated, in which Figure 1 is a view in elevation of my im' proved smoke ack with portions thereof removed, illustrating the internal construction. Fig. 2 is a side view thereof. Fig. 3 is a top plan view with the supporting structure therefor removed.

Referring to the drawings in which simi lar reference numerals designate corresponding parts throughout the several views, 1 are the roof beams supporting a roofing 2 thereabove and which roofing is provided with an opening 3 extending therethrough. Arising from the sides of the opening 3 are the beams 4t upon the top surface of which rests the larger portion of the weight of the smoke jack.

The smoke jack comprises the body portion 5, extending above which is a top or cowl 6. The body portion 5 rests upon the supporting beams 4 and suspended therebeneath is a mouth or hood 7 provided at its upper extremity with the throat 8 which fits and extends within the body portion 5, and is of a relatively smaller diameter than the same so that a suitable ejector action is obtained by the passing of the hot gases, which collect beneath the roof of the house, through the body portion of the jack.

The body portion 5 comprises the preferably cylindrical pipe 9 projecting outwardly from the upper extremity of which is the ventilating deflector 10. The said deflector is provided with apertures extending therethrough and arising from the side walls of the apertures are the incasing pipes 11 protecting therein the bolts 12. The pipes 11 and bolts 12 coact to hold the top or cowl 6 in spaced or rigid relation wit-h respect to the ventilating deflector. The body portion 5 is enlarged as at 12 adjacent the lower extremity thereof and which rests upon a suitable supporting collar or plate 13, the latter being provided with a suitable opening extending therethrough of substantially the same size as the body portion opening. The shape of the collar 13 is illustrated in Fig. 3 as being of square outline. However, the exact shape is not material but may be changed to conform with the varying conditions as they arise in practice. The supporting collar or plate 13 rests directly upon the supporting beams 4 and support the smoke jack thereabove.

The mouth or hood portion of the jack comprises the inclined approximately semicircular end walls 14 which are spaced a suitable distance apart and held in such relation by the upper and lower trapezoidal plates 15. The trapezoidal side plates 15 are secured to the semi-cylindrical end walls by the bolts or rivets 16 which are preferably formed of some material best suited to resist the action of the acid gases and other destructive agents arising from the combustion of the fuel as takes place in the fire box of the locomotive. The semi-cylindrical end walls and trapezoidal plates communicate with and are secured to the substantially frusto-conical member 17 and secured thereto and extending thereabove is the throat 8.

The upper portion of the frusto-conical member 17 is provided with the outlying flange 18 which is rigidly secured to a similar flange 19 of the throat 8. As illustrated in Fig. 1 the extreme upper portion of the frusto-conical member 17 is substantially circular in outline and fits within and lies flush with the throat 8 which projects thereabove. The throat 8 is substantially cylindrical in outline and of a diameter approximately equal to the ventilating pipes 9 and relatively smaller than the enlarged portions 12 thereof. The throat 8 extends for a short distance within the enlarged portion 12 so that the gases and smoke which collect around the ceiling of the engine house due to the improper alining of an engine smoke stack with a hood or other suitable source, will pass upwardly as indicated by arrows in Fig. 1, through the space 20 and pass upwardly through the body portion and escape therefrom, it being noted that the gases in so doing will create a draft in the hood of the smoke jack which will be of importance when an engine is being initially fired and there is little or no draft due to the heat of the fire. In this case by positioning the engine beneath the mouth, the draft created by the ejector action of the mouth and body portion of the smoke jack will create an artificial draft within the mouth of the smoke jack for the carrying away of the excessive smoke arising when a fire is being started and also lessening the time for the starting of the fire.

In order that the throat and hood portion of the smoke jack may be suspended beneath the body portion thereof and held in proper relation thereto, suitable lugs 21 are provided upon the hood, outstanding therefrom, and through which extend suitable suspending rods 22 which are secured to and depend from the supporting collar or plate 13. In the present illustration there has been illus trated fou-r suspending rods 22 the exact number however not being of importance. However, in order to coact therewith and prevent any side play of the lower portion of the smoke jack the guy rods 23 are provided the same engaging suitable lugs 24 formed on the hood, and at their upper extremities engage the eye bolts 25, there being a suitable turn buckle 26 whereby the length of the said guy rods may be adjusted.

In order that the water of condensation which gathers upon the inside and outside of the smoke jack may be led away, it being noted that the corrosive action of the acidulated water would work havoc upon the locomotive if it be allowed to drop and remain thereon, drip troughs 27 are provided extending centrally beneath the trapezoidal side plates 15 and extend a slight distance beyond the ends thereof so that the acidulated water of condensation as it passes down the side walls of the smoke jack will drop into the drip troughs 27 and be conducted therefrom by means of the discharge pipe 28. By the providing of the said trough at substantially the center of the side walls of the hood the acidulated water either upon the outer or inner surface of the smoke jack will wend its way into the trough and be discharged therefrom. Rigidly secured to the outer and inner surfaces of the semicylindrical end walls 1 1 are the stiffening bands 29 extending approximately at right angles to an element of the cylindrical surface and perform the double function of holding the members 14 in cylindrical outline, stiffening the same, and forming guide flanges directing the acidulated water of condensation down into the drip troughs 27 which in this connection it is to be noted do not extend around the entire lower end of the smoke jack but due to the manner in which the stiffening bands 29 are formed extend only along the straight side walls 15.

From the forgoing it will be apparent that the smoke jack as herein described con tains many novel and advantageous features among which is the manner in which the entire jack is supported, the ejector action whereby an increased draft will be obtained and the ceiling of the house kept free of smoke and gases, and the construction of the lower or hood portion of the jack including the semi-cylindrical members and the trapezoidal plates as well as the stiffening flanges and the drip troughs forms a smoke jack which will be cheap to manufacture and extremely effective for the purpose intended.

WVhat I claim is 1. A smoke jack comprising an upper body portion, a supporting collar at the lower extremity thereof, a hood suspended beneath the said body portion andprovided with a threat extending upwardly therein and spaced a distance from the side walls thereof, the space between the throat and body portion communicating with the interior of the supporting roof upon which the jack is mounted, and means disposed at the lower extremity of said hood for the conducting away of the liquid which may gather thereupon.

2. A smoke jack comprising a body portion, a supporting plate at the lower extremity thereof and projecting outwardly therefrom, a cowl secured to the top of said body portion and spaced a distance therefrom, a hood suspended beneath said body portion by rods secured to said plate, said hood comprising semi-cylindrical end walls and side plates, the upper extremity of said hood communicating with a cylindrical mouth, a cylindrical mouth extending into said body portion and spaced. a distance from the side walls thereof, the space between the side walls of the body portion and the cylindrical mouth communicating with the interior of the supporting structure for the ventilating thereof and the ejector action obtained by the passage of gas therethrough,

and means disposed at the lower extremity of said hood for the conducting away of the liquid which may gather upon the surfaces of said smoke ack.

3. A smoke jack comprising a body portion including a ventilating pipe and an enlarged lower portion, a supporting collar or plate at the lower extremity of said enlarged portion, projecting outwardly therefrom and supporting the said body portion thereabove, a ventilating deflector at the top of said ventilating pipe, a cowl supported thereabove and held in spaced relation thereto, a hood, suspending rods extending downwardly from said supporting collar or plate and engaging the said hood for the holding of the same, said hood including flaring end walls, a cylindrical mouth at the upper extremity of said hood projecting within the said enlarged portion of the body portion of the smoke jack, and drip troughs extending centrally of the side walls of the hood, and stiffening means secured to the flaring end walls thereof adapted to direct the water of condensation upon the inner and outer faces of said hood in the drip troughs, means for discharging the said liquid from the said drip troughs.

4:. In a smoke jack the combination of a body portion, a cowl mounted thereabove and held in spaced relation thereto, a hood suspended therebeneath and including cylindrical flaring end walls and trapezoidal side plates, and a throat disposed at the upper extremity of said hood, projecting within the said body portion and spaced from the side walls thereof, the opening between the side walls of the said body portion and the said throat communicating with the interior of the supporting structure of the said smoke jack, drip troughs secured to and disposed centrally of and depending beneath the hood side walls, and stiffening bands secured to the exterior and interior of the said hood end members adapted to lead water of condensation within the said troughs.

5. In a smoke jack the combination of a body portion including a ventilating pipe enlarged at the lower portion thereof, a supporting collar at the lower extremity of said ventilating pipe, a cowl disposed above and held in spaced relation to said ventilating pipe, a hood suspended below and secured to the said supporting plate or collar, said hood including cylindrical end walls and trapezoidal plates extending therebetween, a throat rigidly secured to the upper extremity of said hood, projecting within the said ventilating pipe and spaced from the side walls thereof, the space between the side walls of the ventilating pipe and the throat communicating with the interior of the supporting structure and forming an ejector for the hood, and drip troughs disposed beneath and centrally of said trapezoidal side plates, stiffening bands secured to the end walls and adapted to lead water of condensation within the drip troughs.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

JAMES B. COX.

l/Vitnesses:

EDWARD W. POWELL, WVILLIAM WATSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

